﻿<!doctype html>
<html>

<head>
  <meta charset="utf-8">
  <title>HTML5+Canvas漂亮的3D烟花2024跨年特效</title>

  <style>
    html,
    body {
      margin: 0px;
      width: 100%;
      height: 100%;
      overflow: hidden;
      background: #000;
    }
  </style>

</head>

<body>
  <canvas id="canvas" style="position:absolute;width:100%;height:100%;z-index:8888"></canvas>
  <canvas style="position:absolute;width:100%;height:100%;z-index:9999" class="canvas"></canvas>
  <audio id="myAudio" src="./music/test.mp3" controls autoplay style="display: none;">
  </audio>

  <!-- <div class="overlay">
    <div class="tabs">
      <div class="tabs-labels"><span class="tabs-label">Commands</span><span class="tabs-label">Info</span><span
          class="tabs-label">Share</span></div>

      <div class="tabs-panels">
        <ul class="tabs-panel commands">
        </ul>
      </div>
    </div>
  </div> -->
  <script src="./js/jQuery.js" type="text/javascript"></script>

  <script>
    function initVars() {

      pi = Math.PI;
      ctx = canvas.getContext("2d");
      canvas.width = canvas.clientWidth;
      canvas.height = canvas.clientHeight;
      cx = canvas.width / 2;
      cy = canvas.height / 2;
      playerZ = -25;
      playerX = playerY = playerVX = playerVY = playerVZ = pitch = yaw = pitchV = yawV = 0;
      scale = 600;
      seedTimer = 0;
      seedInterval = 5, seedLife = 100;
      gravity = .02;
      seeds = new Array();
      s = "./music/";
      sparks = new Array();
      pow1 = new Audio(s + "fire1.ogg");
      pow2 = new Audio(s + "fire2.ogg");
      pow3 = new Audio(s + "fire3.ogg");
      pow4 = new Audio(s + "fire4.ogg");
      frames = 0;
    }

    function rasterizePoint(x, y, z) {

      var p, d;
      x -= playerX;
      y -= playerY;
      z -= playerZ;
      p = Math.atan2(x, z);
      d = Math.sqrt(x * x + z * z);
      x = Math.sin(p - yaw) * d;
      z = Math.cos(p - yaw) * d;
      p = Math.atan2(y, z);
      d = Math.sqrt(y * y + z * z);
      y = Math.sin(p - pitch) * d;
      z = Math.cos(p - pitch) * d;
      var rx1 = -1000,
        ry1 = 1,
        rx2 = 1000,
        ry2 = 1,
        rx3 = 0,
        ry3 = 0,
        rx4 = x,
        ry4 = z,
        uc = (ry4 - ry3) * (rx2 - rx1) - (rx4 - rx3) * (ry2 - ry1);
      if (!uc) return {
        x: 0,
        y: 0,
        d: -1
      };
      var ua = ((rx4 - rx3) * (ry1 - ry3) - (ry4 - ry3) * (rx1 - rx3)) / uc;
      var ub = ((rx2 - rx1) * (ry1 - ry3) - (ry2 - ry1) * (rx1 - rx3)) / uc;
      if (!z) z = .000000001;
      if (ua > 0 && ua < 1 && ub > 0 && ub < 1) {
        return {
          x: cx + (rx1 + ua * (rx2 - rx1)) * scale,
          y: cy + y / z * scale,
          d: Math.sqrt(x * x + y * y + z * z)
        };
      } else {
        return {
          x: cx + (rx1 + ua * (rx2 - rx1)) * scale,
          y: cy + y / z * scale,
          d: -1
        };
      }
    }

    function spawnSeed() {

      seed = new Object();
      seed.x = -50 + Math.random() * 100;
      seed.y = 25;
      seed.z = -50 + Math.random() * 100;
      seed.vx = .1 - Math.random() * .2;
      seed.vy = -1.5; //*(1+Math.random()/2);
      seed.vz = .1 - Math.random() * .2;
      seed.born = frames;
      seeds.push(seed);
    }

    function splode(x, y, z) {

      t = 5 + parseInt(Math.random() * 150);
      sparkV = 1 + Math.random() * 2.5;
      type = parseInt(Math.random() * 3);
      switch (parseInt(Math.random() * 4)) {
        case 0:
          pow = new Audio(s + "fire1.ogg");
          break;
        case 1:
          pow = new Audio(s + "fire2.ogg");
          break;
        case 2:
          pow = new Audio(s + "fire3.ogg");
          break;
        case 3:
          pow = new Audio(s + "fire4.ogg");
          break;
      }
      // d=Math.sqrt((x-playerX)*(x-playerX)+(y-playerY)*(y-playerY)+(z-playerZ)*(z-playerZ));
      /*pow.volume=1.5/(1+d/10)*/
      ;
      pow.play();
    }

    function doLogic() {

      if (seedTimer < frames) {
        seedTimer = frames + seedInterval * Math.random() * 10;
        spawnSeed();
      }
      for (i = 0; i < seeds.length; ++i) {
        seeds[i].vy += gravity;
        seeds[i].x += seeds[i].vx;
        seeds[i].y += seeds[i].vy;
        seeds[i].z += seeds[i].vz;
        if (frames - seeds[i].born > seedLife) {
          splode(seeds[i].x, seeds[i].y, seeds[i].z);
          seeds.splice(i, 1);
        }
      }
      for (i = 0; i < sparks.length; ++i) {
        if (sparks[i].alpha > 0 && sparks[i].radius > 5) {
          sparks[i].alpha -= .01;
          sparks[i].radius /= 1.02;
          sparks[i].vy += gravity;
          point = new Object();
          point.x = sparks[i].x;
          point.y = sparks[i].y;
          point.z = sparks[i].z;
          if (sparks[i].trail.length) {
            x = sparks[i].trail[sparks[i].trail.length - 1].x;
            y = sparks[i].trail[sparks[i].trail.length - 1].y;
            z = sparks[i].trail[sparks[i].trail.length - 1].z;
            d = ((point.x - x) * (point.x - x) + (point.y - y) * (point.y - y) + (point.z - z) * (point.z - z));
            if (d > 9) {
              sparks[i].trail.push(point);
            }
          } else {
            sparks[i].trail.push(point);
          }
          if (sparks[i].trail.length > 5) sparks[i].trail.splice(0, 1);
          sparks[i].x += sparks[i].vx;
          sparks[i].y += sparks[i].vy;
          sparks[i].z += sparks[i].vz;
          sparks[i].vx /= 1.075;
          sparks[i].vy /= 1.075;
          sparks[i].vz /= 1.075;
        } else {
          sparks.splice(i, 1);
        }
      }
      p = Math.atan2(playerX, playerZ);
      d = Math.sqrt(playerX * playerX + playerZ * playerZ);
      d += Math.sin(frames / 80) / 1.25;
      t = Math.sin(frames / 200) / 40;
      playerX = Math.sin(p + t) * d;
      playerZ = Math.cos(p + t) * d;
      yaw = pi + p + t;
    }

    function rgb(col) {

      var r = parseInt((.5 + Math.sin(col) * .5) * 16);
      var g = parseInt((.5 + Math.cos(col) * .5) * 16);
      var b = parseInt((.5 - Math.sin(col) * .5) * 16);
      return "#" + r.toString(16) + g.toString(16) + b.toString(16);
    }

    function draw() {

      ctx.clearRect(0, 0, cx * 2, cy * 2);

      ctx.fillStyle = "#ff8";
      for (i = -100; i < 100; i += 3) {
        for (j = -100; j < 100; j += 4) {
          x = i;
          z = j;
          y = 25;
          point = rasterizePoint(x, y, z);
          if (point.d != -1) {
            size = 250 / (1 + point.d);
            d = Math.sqrt(x * x + z * z);
            a = 0.75 - Math.pow(d / 100, 6) * 0.75;
            if (a > 0) {
              ctx.globalAlpha = a;
              ctx.fillRect(point.x - size / 2, point.y - size / 2, size, size);
            }
          }
        }
      }
      ctx.globalAlpha = 1;
      for (i = 0; i < seeds.length; ++i) {
        point = rasterizePoint(seeds[i].x, seeds[i].y, seeds[i].z);
        if (point.d != -1) {
          size = 200 / (1 + point.d);
          ctx.fillRect(point.x - size / 2, point.y - size / 2, size, size);
        }
      }
      point1 = new Object();
      for (i = 0; i < sparks.length; ++i) {
        point = rasterizePoint(sparks[i].x, sparks[i].y, sparks[i].z);
        if (point.d != -1) {
          size = sparks[i].radius * 200 / (1 + point.d);
          if (sparks[i].alpha < 0) sparks[i].alpha = 0;
          if (sparks[i].trail.length) {
            point1.x = point.x;
            point1.y = point.y;
            for (j = sparks[i].trail.length - 1; j >= 0; --j) {
              point2 = rasterizePoint(sparks[i].trail[j].x, sparks[i].trail[j].y, sparks[i].trail[j].z);
              if (point2.d != -1) {
                ctx.globalAlpha = j / sparks[i].trail.length * sparks[i].alpha / 2;
                ctx.beginPath();
                ctx.moveTo(point1.x, point1.y);
                ctx.lineWidth = 1 + sparks[i].radius * 10 / (sparks[i].trail.length - j) / (1 + point2.d);
                ctx.lineTo(point2.x, point2.y);
                ctx.stroke();
                point1.x = point2.x;
                point1.y = point2.y;
              }
            }
          }
          ctx.globalAlpha = sparks[i].alpha;
          // ctx.drawImage(sparks[i].img,point.x-size/2,point.y-size/2,size,size);
        }
      }
    }

    function frame() {

      if (frames > 100000) {
        seedTimer = 0;
        frames = 0;
      }
      frames++;
      draw();
      doLogic();
      requestAnimationFrame(frame);
    }

    window.addEventListener("resize", () => {
      canvas.width = canvas.clientWidth;
      canvas.height = canvas.clientHeight;
      cx = canvas.width / 2;
      cy = canvas.height / 2;
    });

    initVars();
    frame();

    window.onload = function () {
      // setInterval("toggleSound()",100);
      // var musicBotton = document.getElementById("playButton");

      // 添加用户交互的触发机制
      document.addEventListener('keydown', function (event) {
        if (event.key === "Enter") {
          const music = document.getElementById("myAudio"); //获取ID  
          if (music.paused) {
            music.paused = false;
            music.play();
          }
        }
      }, {
        once: true
      });
    }

    function toggleSound() {
      var music = document.getElementById("myAudio"); //获取ID  

      if (music.paused) { //判读是否播放  
        music.paused = false;
        music.play(); //没有就播放 
      }
    }
  </script>
  <script>
    var S = {
      init: function () {
        var action = window.location.href,
          i = action.indexOf('?a=');

        S.Drawing.init('.canvas');
        document.body.classList.add('body--ready');

        if (i !== -1) {
          S.UI.simulate(decodeURI(action).substring(i + 3));
        } else {
          // S.UI.simulate('|#countdown 3||新|年|快|乐|这是|送你的烟花呀|2024 HAPPY NEW YEAR');
          S.UI.simulate('|#countdown 3||新|年|快|乐|晶晶宝贝|LOVE YOU FOREVER');
        }

        S.Drawing.loop(function () {
          S.Shape.render();
        });
      }
    };


    S.Drawing = (function () {
      var canvas,
        context,
        renderFn
      requestFrame = window.requestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.oRequestAnimationFrame ||
        window.msRequestAnimationFrame ||
        function (callback) {
          window.setTimeout(callback, 1000 / 60);
        };

      return {
        init: function (el) {
          canvas = document.querySelector(el);
          context = canvas.getContext('2d');
          this.adjustCanvas();

          window.addEventListener('resize', function (e) {
            S.Drawing.adjustCanvas();
          });
        },

        loop: function (fn) {
          renderFn = !renderFn ? fn : renderFn;
          this.clearFrame();
          renderFn();
          requestFrame.call(window, this.loop.bind(this));
        },

        adjustCanvas: function () {
          canvas.width = window.innerWidth;
          canvas.height = window.innerHeight;
        },

        clearFrame: function () {
          context.clearRect(0, 0, canvas.width, canvas.height);
        },

        getArea: function () {
          return {
            w: canvas.width,
            h: canvas.height
          };
        },

        drawCircle: function (p, c) {
          context.fillStyle = c.render();
          context.beginPath();
          context.arc(p.x, p.y, p.z, 0, 2 * Math.PI, true);
          context.closePath();
          context.fill();
        }
      }
    }());


    S.UI = (function () {
      var canvas = document.querySelector('.canvas'),
        interval,
        isTouch = false, //('ontouchstart' in window || navigator.msMaxTouchPoints),
        currentAction,
        resizeTimer,
        time,
        maxShapeSize = 30,
        firstAction = true,
        sequence = [],
        cmd = '#';

      function formatTime(date) {
        var h = date.getHours(),
          m = date.getMinutes(),
          m = m < 10 ? '0' + m : m;
        return h + ':' + m;
      }

      function getValue(value) {
        return value && value.split(' ')[1];
      }

      function getAction(value) {
        value = value && value.split(' ')[0];
        return value && value[0] === cmd && value.substring(1);
      }

      function timedAction(fn, delay, max, reverse) {
        clearInterval(interval);
        currentAction = reverse ? max : 1;
        fn(currentAction);

        if (!max || (!reverse && currentAction < max) || (reverse && currentAction > 0)) {
          interval = setInterval(function () {
            currentAction = reverse ? currentAction - 1 : currentAction + 1;
            fn(currentAction);

            if ((!reverse && max && currentAction === max) || (reverse && currentAction === 0)) {
              clearInterval(interval);
            }
          }, delay);
        }
      }

      function reset(destroy) {
        clearInterval(interval);
        sequence = [];
        time = null;
        destroy && S.Shape.switchShape(S.ShapeBuilder.letter(''));
      }

      function performAction(value) {
        var action,
          value,
          current;

        // overlay.classList.remove('overlay--visible');
        sequence = typeof (value) === 'object' ? value : sequence.concat(value.split('|'));
        // input.value = '';
        // checkInputWidth();

        timedAction(function (index) {
          current = sequence.shift();
          action = getAction(current);
          value = getValue(current);

          switch (action) {
            case 'countdown':
              value = parseInt(value) || 10;
              value = value > 0 ? value : 10;

              timedAction(function (index) {
                if (index === 0) {
                  if (sequence.length === 0) {
                    S.Shape.switchShape(S.ShapeBuilder.letter(''));
                  } else {
                    performAction(sequence);
                  }
                } else {
                  S.Shape.switchShape(S.ShapeBuilder.letter(index), true);
                }
              }, 1000, value, true);
              break;

            case 'rectangle':
              value = value && value.split('x');
              value = (value && value.length === 2) ? value : [maxShapeSize, maxShapeSize / 2];

              S.Shape.switchShape(S.ShapeBuilder.rectangle(Math.min(maxShapeSize, parseInt(value[0])), Math.min(
                maxShapeSize, parseInt(value[1]))));
              break;

            case 'circle':
              value = parseInt(value) || maxShapeSize;
              value = Math.min(value, maxShapeSize);
              S.Shape.switchShape(S.ShapeBuilder.circle(value));
              break;

            case 'time':
              var t = formatTime(new Date());

              if (sequence.length > 0) {
                S.Shape.switchShape(S.ShapeBuilder.letter(t));
              } else {
                timedAction(function () {
                  t = formatTime(new Date());
                  if (t !== time) {
                    time = t;
                    S.Shape.switchShape(S.ShapeBuilder.letter(time));
                  }
                }, 1000);
              }
              break;

            default:
              S.Shape.switchShape(S.ShapeBuilder.letter(current[0] === cmd ? 'What?' : current));
          }
        }, 2000, sequence.length);
      }

      function checkInputWidth(e) {
        if (input.value.length > 18) {
          ui.classList.add('ui--wide');
        } else {
          ui.classList.remove('ui--wide');
        }

        if (firstAction && input.value.length > 0) {
          ui.classList.add('ui--enter');
        } else {
          ui.classList.remove('ui--enter');
        }
      }

      function bindEvents() {
        document.body.addEventListener('keydown', function (e) {
          // input.focus();

          if (e.keyCode === 13) {
            firstAction = false;
            reset();
            performAction(input.value);
          }
        });

        // canvas.addEventListener('click', function (e) {
        //   overlay.classList.remove('overlay--visible');
        // });
      }

      function init() {
        bindEvents();
        // input.focus();
        isTouch && document.body.classList.add('touch');
      }

      // Init
      init();

      return {
        simulate: function (action) {
          performAction(action);
        }
      }
    }());


    S.UI.Tabs = (function () {
      var tabs = document.querySelector('.tabs'),
        labels = document.querySelector('.tabs-labels'),
        triggers = document.querySelectorAll('.tabs-label'),
        panels = document.querySelectorAll('.tabs-panel');

      // function activate(i) {
      //   triggers[i].classList.add('tabs-label--active');
      //   panels[i].classList.add('tabs-panel--active');
      // }

      function bindEvents() {
        labels.addEventListener('click', function (e) {
          var el = e.target,
            index;

          if (el.classList.contains('tabs-label')) {
            for (var t = 0; t < triggers.length; t++) {
              triggers[t].classList.remove('tabs-label--active');
              panels[t].classList.remove('tabs-panel--active');

              if (el === triggers[t]) {
                index = t;
              }
            }

            activate(index);
          }
        });
      }

      function init() {
        // activate(0);
        // bindEvents();
      }

      // Init
      init();
    }());


    S.Point = function (args) {
      this.x = args.x;
      this.y = args.y;
      this.z = args.z;
      this.a = args.a;
      this.h = args.h;
    };


    S.Color = function (r, g, b, a) {
      this.r = r;
      this.g = g;
      this.b = b;
      this.a = a;
    };

    S.Color.prototype = {
      render: function () {
        return 'rgba(' + this.r + ',' + +this.g + ',' + this.b + ',' + this.a + ')';
      }
    };


    S.Dot = function (x, y) {
      this.p = new S.Point({
        x: x,
        y: y,
        z: 5,
        a: 1,
        h: 0
      });

      this.e = 0.07;
      this.s = true;

      this.c = new S.Color(255, 255, 255, this.p.a);

      this.t = this.clone();
      this.q = [];
    };

    S.Dot.prototype = {
      clone: function () {
        return new S.Point({
          x: this.x,
          y: this.y,
          z: this.z,
          a: this.a,
          h: this.h
        });
      },

      _draw: function () {
        this.c.a = this.p.a;
        S.Drawing.drawCircle(this.p, this.c);
      },

      _moveTowards: function (n) {
        var details = this.distanceTo(n, true),
          dx = details[0],
          dy = details[1],
          d = details[2],
          e = this.e * d;

        if (this.p.h === -1) {
          this.p.x = n.x;
          this.p.y = n.y;
          return true;
        }

        if (d > 1) {
          this.p.x -= ((dx / d) * e);
          this.p.y -= ((dy / d) * e);
        } else {
          if (this.p.h > 0) {
            this.p.h--;
          } else {
            return true;
          }
        }

        return false;
      },

      _update: function () {
        if (this._moveTowards(this.t)) {
          var p = this.q.shift();

          if (p) {
            this.t.x = p.x || this.p.x;
            this.t.y = p.y || this.p.y;
            this.t.z = p.z || this.p.z;
            this.t.a = p.a || this.p.a;
            this.p.h = p.h || 0;
          } else {
            if (this.s) {
              this.p.x -= Math.sin(Math.random() * 3.142);
              this.p.y -= Math.sin(Math.random() * 3.142);
            } else {
              this.move(new S.Point({
                x: this.p.x + (Math.random() * 50) - 25,
                y: this.p.y + (Math.random() * 50) - 25,
              }));
            }
          }
        }

        d = this.p.a - this.t.a;
        this.p.a = Math.max(0.1, this.p.a - (d * 0.05));
        d = this.p.z - this.t.z;
        this.p.z = Math.max(1, this.p.z - (d * 0.05));
      },

      distanceTo: function (n, details) {
        var dx = this.p.x - n.x,
          dy = this.p.y - n.y,
          d = Math.sqrt(dx * dx + dy * dy);

        return details ? [dx, dy, d] : d;
      },

      move: function (p, avoidStatic) {
        if (!avoidStatic || (avoidStatic && this.distanceTo(p) > 1)) {
          this.q.push(p);
        }
      },

      render: function () {
        this._update();
        this._draw();
      }
    }


    S.ShapeBuilder = (function () {
      var gap = 13,
        shapeCanvas = document.createElement('canvas'),
        shapeContext = shapeCanvas.getContext('2d'),
        fontSize = 500,
        fontFamily = 'Avenir, Helvetica Neue, Helvetica, Arial, sans-serif';

      function fit() {
        shapeCanvas.width = Math.floor(window.innerWidth / gap) * gap;
        shapeCanvas.height = Math.floor(window.innerHeight / gap) * gap;
        shapeContext.fillStyle = 'red';
        shapeContext.textBaseline = 'middle';
        shapeContext.textAlign = 'center';
      }

      function processCanvas() {
        var pixels = shapeContext.getImageData(0, 0, shapeCanvas.width, shapeCanvas.height).data;
        dots = [],
          pixels,
          x = 0,
          y = 0,
          fx = shapeCanvas.width,
          fy = shapeCanvas.height,
          w = 0,
          h = 0;

        for (var p = 0; p < pixels.length; p += (4 * gap)) {
          if (pixels[p + 3] > 0) {
            dots.push(new S.Point({
              x: x,
              y: y
            }));

            w = x > w ? x : w;
            h = y > h ? y : h;
            fx = x < fx ? x : fx;
            fy = y < fy ? y : fy;
          }

          x += gap;

          if (x >= shapeCanvas.width) {
            x = 0;
            y += gap;
            p += gap * 4 * shapeCanvas.width;
          }
        }

        return {
          dots: dots,
          w: w + fx,
          h: h + fy
        };
      }

      function setFontSize(s) {
        shapeContext.font = 'bold ' + s + 'px ' + fontFamily;
      }

      function isNumber(n) {
        return !isNaN(parseFloat(n)) && isFinite(n);
      }

      function init() {
        fit();
        window.addEventListener('resize', fit);
      }

      // Init
      init();

      return {
        imageFile: function (url, callback) {
          var image = new Image(),
            a = S.Drawing.getArea();

          image.onload = function () {
            shapeContext.clearRect(0, 0, shapeCanvas.width, shapeCanvas.height);
            shapeContext.drawImage(this, 0, 0, a.h * 0.6, a.h * 0.6);
            callback(processCanvas());
          };

          image.onerror = function () {
            callback(S.ShapeBuilder.letter('What?'));
          }

          image.src = url;
        },

        circle: function (d) {
          var r = Math.max(0, d) / 2;
          shapeContext.clearRect(0, 0, shapeCanvas.width, shapeCanvas.height);
          shapeContext.beginPath();
          shapeContext.arc(r * gap, r * gap, r * gap, 0, 2 * Math.PI, false);
          shapeContext.fill();
          shapeContext.closePath();

          return processCanvas();
        },

        letter: function (l) {
          var s = 0;

          setFontSize(fontSize);
          s = Math.min(fontSize,
            (shapeCanvas.width / shapeContext.measureText(l).width) * 0.8 * fontSize,
            (shapeCanvas.height / fontSize) * (isNumber(l) ? 1 : 0.45) * fontSize);
          setFontSize(s);

          shapeContext.clearRect(0, 0, shapeCanvas.width, shapeCanvas.height);
          shapeContext.fillText(l, shapeCanvas.width / 2, shapeCanvas.height / 2);

          return processCanvas();
        },

        rectangle: function (w, h) {
          var dots = [],
            width = gap * w,
            height = gap * h;

          for (var y = 0; y < height; y += gap) {
            for (var x = 0; x < width; x += gap) {
              dots.push(new S.Point({
                x: x,
                y: y,
              }));
            }
          }

          return {
            dots: dots,
            w: width,
            h: height
          };
        }
      };
    }());


    S.Shape = (function () {
      var dots = [],
        width = 0,
        height = 0,
        cx = 0,
        cy = 0;

      function compensate() {
        var a = S.Drawing.getArea();

        cx = a.w / 2 - width / 2;
        cy = a.h / 2 - height / 2;
      }

      return {
        shuffleIdle: function () {
          var a = S.Drawing.getArea();

          for (var d = 0; d < dots.length; d++) {
            if (!dots[d].s) {
              dots[d].move({
                x: Math.random() * a.w,
                y: Math.random() * a.h
              });
            }
          }
        },

        switchShape: function (n, fast) {
          var size,
            a = S.Drawing.getArea();

          width = n.w;
          height = n.h;

          compensate();

          if (n.dots.length > dots.length) {
            size = n.dots.length - dots.length;
            for (var d = 1; d <= size; d++) {
              dots.push(new S.Dot(a.w / 2, a.h / 2));
            }
          }

          var d = 0,
            i = 0;

          while (n.dots.length > 0) {
            i = Math.floor(Math.random() * n.dots.length);
            dots[d].e = fast ? 0.25 : (dots[d].s ? 0.14 : 0.11);

            if (dots[d].s) {
              dots[d].move(new S.Point({
                z: Math.random() * 20 + 10,
                a: Math.random(),
                h: 18
              }));
            } else {
              dots[d].move(new S.Point({
                z: Math.random() * 5 + 5,
                h: fast ? 18 : 30
              }));
            }

            dots[d].s = true;
            dots[d].move(new S.Point({
              x: n.dots[i].x + cx,
              y: n.dots[i].y + cy,
              a: 1,
              z: 5,
              h: 0
            }));

            n.dots = n.dots.slice(0, i).concat(n.dots.slice(i + 1));
            d++;
          }

          for (var i = d; i < dots.length; i++) {
            if (dots[i].s) {
              dots[i].move(new S.Point({
                z: Math.random() * 20 + 10,
                a: Math.random(),
                h: 20
              }));

              dots[i].s = false;
              dots[i].e = 0.04;
              dots[i].move(new S.Point({
                x: Math.random() * a.w,
                y: Math.random() * a.h,
                a: 0.3, //.4
                z: Math.random() * 4,
                h: 0
              }));
            }
          }
        },

        render: function () {
          for (var d = 0; d < dots.length; d++) {
            dots[d].render();
          }
        }
      }
    }());


    S.init();
  </script>
  <script src="./js/firework.js" type="text/javascript"></script>

</body>

</html>